Concrete-column clamp



E. T. CORBIN coucnm'n commu cm1 rsepa. 27,1927. -.1,643,8 38.

Filed Nov. 17. 1926 2 Sheets-Sheet 1 Tnx Patented Sept. 27, 1927.

EMMETT T. CORBIN, OF HAMILTON, OHIO.

CONCRETE-COLUMN CLAMP.

Application led November 17, 1926. Serial No. 148,908.

This invention relates to certain new and useful improvementsl vinconcrete column clamps and hasv for one o its objects to pro# vide aclainptor tightening a metallic strap or band in 'binding relation witha concrete mold or form `tor a column.

Another object of the invention is to provide 'a clamp ot the above typewherein the ends of the metallic straps orbands are engaged with theouter ends ot a pair of clamping members, with-a cam lever forrelatively shitting the two yclamping members for placing the bandv inbinding and enclosingrela-l tions with a column form of mold.

A further object ot the invention is to provide in connection with aconcrete column clamp of the above type, a cam lever forming a part ofthe clamping mechanism with a cam formation upon each end thereof forselective use whereby lthe cam lever may assume a diiierent positionwith respect to the form or mold whenl moved to its clamping position i.e., to extend either perpendiculai'ly to the mold or lie paralleltherewith.

lVith the above and other objects in view that will become apparent asthenature of the invention is better understood, the same consists inthe novel form, 'combination and arrangement of parts and in theVdetails of construction hereinafter more fully described, shown in theaccompanying drawings and claimed. .Y

In the accompanying drawings, wherein like reference characters indicatecorresponding parts throughout the several views,

Figure 1 is a fragmentary horizontal sectional view ot a mold or formfor a'concrete column with the clamping device operatively associatedtherewith, showing the two parts of the clamping device with which theends of the metallic strap or band are' temporarily attached and the camlever for relatively shitting the two clamping members;

.Figure 2 is atop plan view of the clamping device with the moldragmentarily illustratedin side elevation;

'Figure Sis a detail sectional view takenk ou line" 3 3 of Figure 1showing the two inter-engaged clamping members;

yFigure 4 is a detail sectional view taken Von line 4 4 of Figure 1.showing the cam lever detachably engaged with one of the,

clamping members with the cam portion thereof disposed for engagementwith an abutment on the Aother clamping member;

ing 3 Figure `5 is a perspective viewof one of the clamping members; l y

Figure 6 is a perspective View of the other clamping member; and

Figure 7 is a perspective view, partly broken away of the cam levershowing a, camY portion at each end thereof. p

While the clamping device is capable of association with a concretecolumn of various cross-sectional configurations, the same is hereinillustrated juxtaposed toy one side of a rectangular form or mold, andas shown in Figures 1 and 2, the sides of the mold are formed ofinter-engaged tongue and giooved boards 1 thatrare to be retained inposition by the batten 2 that is placed in front engagement with theboards 1 with the ends of the hatten overlying the outer edges of theend boards. The concrete'fillis confined within the matched boards 1. lY

Thev gist of this invention resides inl the provision of a clampingdevice for securing in enclosing and binding relations, a metali licvstrap or band 4. around the `mold, the band 4 being iirst stretched-orfully extended in binding relations with respect to the form with theends of the band secured in holding position by'a nail or pin 22 throughthe clamping device.

Theclamping device comprises two clamping members and a cam lever withthe ends of the band primarily engaged with t-he outer ends of theclampin members. One of the clamping members s own in detail in Figure 5comprises a base plate 5 with a rectangular .frame 4at one endprojecting perpendicularly therefrom that is formed by bending. the endof the base plate to provide spaced vertical walls 6 and 7, a horizontaltop wall 8 forming a space 9 between the vertical walls while saidvertical walls have aligned openings 10 therein. The

upper and lower ends yof the opening 10 in g the vertical wall 6arerespectively rtapered 100 upwardly and downwardly as at 11 toacilitate passage through the openings 10. The outer end of the baseplate 5 is provided with anopening 12through which one end of the band 4is passed as shown in Figures 105 size to freely pass through theopenings '10 11.0

ktid() in the vertical walls 6 and 7 with two parallel rows of spacedopenings 14 formed therein. :One end ot the 'leg 13 is twisted at rightangles to form a head 15 that has an opening 16 therein for the passageof the other end ot` the band 4. The two clamping members are assembledas shown in Figures 1 and 2 with the leg 13 passed through the openings10 formed in the rectangular irame at one end ot the base plate with theopposite ends ot the band 4 passed through the openings 12 and 16 of theclamping members and when so disposed, a clamping lever is cooperativelyengaged with the two clamping members and operates to cause the ends ofthe band to be drawn toward each other.

The clampinglever 17 liascam portions- 18 and 19 at opposite endsther-cot with oppositely directed pins 2O and 21 carried by each camportion respectively. n

As shown in Figure 1, the leg 13 ot one clamping member is passedthrough the openings in the rectangular Vtrame carried by the ends ofthe base plate 5 ot the otherclamping member while the endsvot the band4.are passed through the openings 1 2 and ,1Grin the clampingmembers andextend over and above the ends ot ythe batten 2. The vpin 2Q projectingtrom the cani portion 18 ot the clamping Alever 17 is inserted into oneot the lower openings .14m the leg 13 with ther cam portion 18 ofthelever disposed tor engagement with the adjacent vertical wall 7. Theouter end ot the clamping'lever 17 is then raised and as the cam portion18 engages the wall 7, the outerends of the two clamping members aredrawn toward each other together withthe ends of the band 4 and lwhenthe vdesired tension has been placed upon the band, and to make the sametast, a pin or nail 22 shall be inserted in the space 9 through one ofthe openingsv 14, so as to permit removal lot the lever 17 leaving`allparts ot the clamping device in position until the concrete has beenpouredl and set, and retention ot the mold boards 1 and batten 2 inposition to allow steafdying ot the concrete filling 3. `When the camportion 18 ot the clamping lever is utilized, the clamping lever assumesa perpendicular position with respect to the batten vwhen the same hasbeen moved to its clamping position and when it is desired to have Vtheclamping lever 17 assume a yposition parallel'with the batten when inits clamping position, the opposite end or cam portion 19-of the leveris employed. rIhe pin 21 carried by the cam portion 19 is inserted inone ot the openings 14 of the upper row in the leg 13 and by moving theouter or cam portionlS of the. clamping lever in a direction toward thebatten 2, the ends of the two clamping members are similarly drawntoward each otherA for placing the retaining band 4 under tension. The

pins 20 and 21 extend from opposite sides of the clamping lever topermit the latter `to be disposed at either side of the leg'13 as willat once be appreciated Jfrom an inspection of Figures 2 and 4.

While there is herein shown and described the preferred embodiment ofthe present invention it is nevertheless to be understood that minorchanges may be made therein without departing from the spirit and scopeot the invention as claimed.

What I claim as new is 1. In a concrete column clamp, a pair of lappingclamping members constructed tor temporary attachment of the ends of aband and a cam lever detachably connected to one clamping member andengaged withy the other clamping member at the lapping parts to causeseparating movements of the lever engaged parts of the members andmovements of the band ends toward each other;

2. In a concrete column clamp, a-pair of clamping members constructedtor temporary'attachment ot the ends of a band, said members lappingeach other and an abutment-on the lapping end oi one member, and

a cam leverl detachably connected lto one` movements therebetween andmovements of the band ends toward each other, and said lever having acam portion at eachv end, the clamping lever lying adjacent the columnwhen one cam end is active and being spaced from the column when theother cam end is active.

4. In a concrete column clamp, ak pair of clamping members constructedfor temporary attachment of the ends of a band, said members being,interengaged and an abutment on one member, anda cam lever detachablyconnected to one member and moved into engagement with the abutment onthe other member to cause relative movements between the two memberstodraw the band ends toward each other, and said lever having a camportion at each end, the clamping lever lying adjacent' the column'wh'enone cam end is active and being spaced from the column when the othercam end is active.

5. Ina concrete column clamp, a pair of clamping members constructed fortemporary attachment ofthe ends of a band and a cam lever detachablyconnected to one clamping member and engaged with the other clampingmember to cause relative movements therebetween and movements of theband ends toward each other, the connection between the lever andclamping member including a pin carried by the lever and one of saidclamping members having series of openings therein for the `selectivereception of the pin.

6. In a concrete column clamp, a pair of clamping members constructedfor temporary attachment of the ends of a band, said members beinginterengaged and an abutment on one member, a cani lever detachablyconnected to one member and moved into engagement with the abutment onthe other member to cause relative movements between the two members todraw the band ends toward each other, the connection between the leverand clamping member including a pin carried by the lever, and one otsaid clamping members having series of openings therein for theselective reception of the pin.

7. Ina concrete column clamp, a pair of clamping members constructed4for temporary attachment of the ends ot a band, said members beinginterengaged and an abut ment on one member, a cam lever detachablyconnected to one member and moved into engagement with the abutment onthev other member to cause relative movements between the two members todraw the band ends toward each other, the engagement between saidmembers including a housing carried by one member forming an abutment'for the cam lever and having` van opening there-V through, and theother member having a leg extending through the housing opening.

8, In a concrete column clamp, a pair of clamping members constructedfor temporary attachment of the ends of a band, said members beingvinterengaged and an abutment on one member, a cam lever detachablyconnected to one member and moved into engagement with the abutment onthe other member to cause relative movements between the two members todraw the band ends toward each other, said lever having a cam portion ateach end, the clamping lever lying adjacent the column when one caniyend is active and being spaced from the column when the other cam endis active, the engagement between said members including a housingcarried by one member forming an abutment tor the cam lever and havingan 'opening therethrough, and the other niember having a leg extendingthrough the housing opening.

9. In a concrete column clamp, a pair of clamping members constructedfor interiitting relatively sliding relations, the outer end of eachclamping member adapted to have a band end attached thereto, and a cam-lever detachably engaged with the clamping members adjacent theinterengaged partsA lever'separates the engaged part-s and moves theband ends toward eachother.

In testimony whereof I affix my signature.

EMMETT T. CORBIN.

